Arbor for circular saw blades



FIG. 1 is a front perspective view of an arbor for circular saw blades (the broken line showing of the saw blade is for environmental purposes and is not considered part of the design);

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof (the left side view is the same as the right side); and,

FIG. 5 is a rear view thereof.

The broken line showing portions of the arbor in all of the views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an arbor for circular saw blades, as shown and described. 